Preparation
Prepare all ingredients for use.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_1_M.jpg)
Melt the butter in a pan and remove from the heat.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_2_M.jpg)
Wash the herbs, shake dry and pluck the leaves from the stalks. Pour the vinegar and wine into a pan.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_3_M.jpg)
Add the herb stalks and bring to the boil.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_4_M.jpg)
Put the herbs on a cutting board.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_5_M.jpg)
Finely chop the herb leaves.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_6_M.jpg)
Crush the peppercorns, add to the pan and let the liquid reduce to about 80ml.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_7_M.jpg)
Place the egg yolks in a heatproof bowl and pour in the reduced liquid through a sieve, whisking.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_8_M.jpg)
Set the bowl over a pan of hot water and whisk the sauce until creamy.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_9_M.jpg)
Bring to a creamy sauce while constant stirring.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_10_M.jpg)
Remove from the heat and add the warm melted butter, first in drops, then in a thin stream, until the sauce is shiny and creamy.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_11_M.jpg)
Mix in the herbs and season with salt and pepper.
![](https://blog.liebherr.com/wp-content/lh-recipe-images/000124/000124_step_12_M.jpg)